package com.java.filter;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet Filter implementation class MyFilter
 */
@WebFilter()
public class MyFilter implements Filter {

	/**
	 * Default constructor.
	 */
	public MyFilter() {
		// TODO Auto-generated constructor stub
	}

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
		// TODO Auto-generated method stub
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		// TODO Auto-generated method stub
		// place your code here
		HttpServletRequest servletRequest = (HttpServletRequest) request;
		HttpServletResponse servletResponse = (HttpServletResponse) response;
		int tag = 0;
		System.out.println("111");
		Cookie[] cookies = servletRequest.getCookies();
		for (Cookie cookie : cookies) {
			if (cookie.getName().equals("id")) {
				tag = 1;
			}
		}
		if (tag == 1) {
			chain.doFilter(request, response);
		} else {
			PrintWriter printWriter = servletResponse.getWriter();

			servletResponse.sendRedirect("login.jsp?flag=1");
		}
		// pass the request along the filter chain
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
		// TODO Auto-generated method stub
	}

}
